US20120049711A1 - Fiber Optic Enclosure Having Tamper Resistant Lock - Google Patents
Fiber Optic Enclosure Having Tamper Resistant Lock Download PDFInfo
- Publication number
- US20120049711A1 US20120049711A1 US13/213,669 US201113213669A US2012049711A1 US 20120049711 A1 US20120049711 A1 US 20120049711A1 US 201113213669 A US201113213669 A US 201113213669A US 2012049711 A1 US2012049711 A1 US 2012049711A1
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- United States
- Prior art keywords
- cam
- panel
- door
- housing
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title description 4
- 239000013307 optical fiber Substances 0.000 claims description 5
- 238000007792 addition Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C3/00—Fastening devices with bolts moving pivotally or rotatively
- E05C3/02—Fastening devices with bolts moving pivotally or rotatively without latching action
- E05C3/04—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt
- E05C3/041—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted
- E05C3/042—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted the handle being at one side, the bolt at the other side or inside the wing
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
- E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying
- E05B17/2088—Means to prevent disengagement of lock and keeper
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4452—Distribution frames
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4452—Distribution frames
- G02B6/44526—Panels or rackmounts covering a whole width of the frame or rack
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/11—Cover fasteners
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1075—Operating means
- Y10T292/1077—Cam
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5009—For portable articles
- Y10T70/5031—Receptacle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5093—For closures
- Y10T70/5097—Cabinet
- Y10T70/5111—Projectable bolt
- Y10T70/5124—Swinging and hooked end
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5093—For closures
- Y10T70/5155—Door
- Y10T70/5199—Swinging door
- Y10T70/5246—Dead bolts
- Y10T70/5296—Single
- Y10T70/5319—Sliding
- Y10T70/5327—Keeper interlocking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5093—For closures
- Y10T70/5155—Door
- Y10T70/5199—Swinging door
- Y10T70/5246—Dead bolts
- Y10T70/5296—Single
- Y10T70/5345—Swinging
- Y10T70/535—Keeper and housing interlocking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5093—For closures
- Y10T70/5155—Door
- Y10T70/5199—Swinging door
- Y10T70/5246—Dead bolts
- Y10T70/5296—Single
- Y10T70/5345—Swinging
- Y10T70/5354—With hooked end
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5093—For closures
- Y10T70/5155—Door
- Y10T70/5199—Swinging door
- Y10T70/5246—Dead bolts
- Y10T70/5296—Single
- Y10T70/5345—Swinging
- Y10T70/5363—Key operable only
Definitions
- the present invention is directed to a fiber optic enclosure with a door securable in a closed position by a cam lock, and, more specifically, toward a fiber optic enclosure with a door securable in a closed position by a cam lock configured to substantially prevent a portion of the housing adjacent to the lock from being pried away from the cam lock.
- Optical fiber enclosures are known that contain various components for connecting optical fibers from a trunk cable to optical patch cables at a customer location.
- These enclosures or housings may be rack-mountable and may have front and/or rear hinged doors for providing access to the housing interior and the various fibers and components therein.
- One or both of these doors may be lockable using, for example, a cam lock.
- FIG. 8 The locking portion of a conventional housing 100 is illustrated in FIG. 8 which housing includes a top panel 102 and a door 104 hingedly connected to a support (not illustrated) so that a free edge 106 of the door 104 can swing toward and away from the top panel 102 .
- a lock 108 which may comprise a conventional cam lock, includes a cylinder 110 that rotates when a key (not illustrated) is inserted in keyway 112 and rotated, and a cam 114 that rotates with the cylinder 110 . In a locked position, illustrated with solid lines in FIG. 8 , the cam extends through a slot 116 in the top panel 102 to prevent the door 104 from pivoting away from the top panel.
- the cam 114 can be rotated out of slot 116 to the orientation illustrated with chain-dashed lines in FIG. 8 to allow the door 104 to be opened.
- This conventional arrangement provides a reasonable degree of security for the components located inside housing 100 .
- slot 116 is generally located near a central portion of the top panel 102 . If the top panel 102 is formed from a material that can be readily deformed, relatively thin sheet metal, for example, it may be possible to pry or bend the portion of top panel 102 near slot 116 away from cylinder 110 so that cam 114 no longer extends through slot 116 . This allows door 104 to be opened without using a key and without changing the orientation of cylinder 110 .
- a first aspect of which comprises a housing having a first panel lying in a first plane, which panel includes a keeper, a support member spaced from the first panel, and a door having a hinge edge hingedly connected to the support member and a free edge opposite the hinge edge, the door being shiftable between a first position generally perpendicular to the first panel and a second position.
- the door includes a lock comprising a rotatable cylinder having an axis of rotation perpendicular to the door and a cam having a first end connected to the cylinder for rotation with the cylinder and a second end spaced from the first end by a cam body.
- the second end extends at an angle to the cam body and lies in a second plane parallel to the axis of rotation.
- Another aspect of the invention comprises a housing having a first panel lying in a first plane and including a keeper arrangement, a support member spaced from the first panel, and a door having a hinge edge hingedly connected to the support member and a free edge opposite the hinge edge.
- the door is shiftable between a first position with the free edge in contact with the first panel and a second position with the free edge spaced from the first panel.
- a lock is mounted on the door and includes a rotatable cylinder having an axis of rotation perpendicular to the door, the cylinder being shiftable between a first orientation and a second orientation angularly offset from the first orientation.
- the lock further includes a cam mechanism rotatable with the cylinder for engaging the keeper arrangement and limiting movement of the door free edge away from the first panel and for limiting movement of the first panel in a direction perpendicular to the plane when the cylinder is in the first position and the door is in the first position and for allowing movement of the door free edge away from the first panel when the cylinder is in the second position.
- a further aspect of the invention comprises a housing that includes a first panel lying in a first plane with an inner side facing into the housing and an outer side opposite the inner side.
- An opening with a side wall extends through the first panel and has a continuous periphery spaced from an edge of the panel.
- the opening includes a first portion having a first width in a direction perpendicular to the first edge and a second portion having a second width in the direction, the second width being greater than the first width.
- the housing also includes a second panel parallel to and spaced from the first panel and a door having a hinge edge hingedly connected to the second panel and a free edge opposite the hinge edge.
- the door is shiftable between a first position with the free edge in contact with the first panel and a second position with the free edge spaced from the first panel, and a lock is mounted on the door.
- the lock includes a key-actuated rotatable cylinder having an axis of rotation perpendicular to the door and a cam having a first end connected to the cylinder for rotation with the cylinder and a second end spaced from the first end by a cam body. The second end extends at an angle to the cam body and lies in a second plane parallel to the axis of rotation and has a length in the direction greater than the first width.
- the cam When the door is in the first position, the cam is shiftable from a first orientation with the cam second end inside the housing to a second orientation with the cam second end overlying the first panel outer side, and the cam body engages the opening side wall to prevent the door from moving toward the second position when the cam is in the second orientation.
- the cam second end is spaced from the first panel when the cam body is located in the first portion.
- FIG. 1 is a perspective view of a housing having a keeper and a door having a cam lock according to an embodiment of the present invention.
- FIG. 2 is a perspective view of the door of FIG. 1 in an open position with the cam lock in a first orientation.
- FIG. 3 is a perspective view of the door of FIG. 1 in a closed position with the cam lock in the first orientation.
- FIG. 4 is a perspective view of the door of FIG. 1 in a closed position with the cam lock in a second orientation.
- FIG. 5 is a perspective view of a housing having a keeper according to another embodiment of the invention.
- FIG. 6 is side elevational view of a housing and keeper according to another embodiment of the invention.
- FIG. 7 is side elevational view of a housing and keeper according to another embodiment of the invention.
- FIG. 8 is a sectional side elevational view taken in the direction of line 8 - 8 in FIG. 7 .
- FIG. 9 is sectional rear elevational view taken in the direction of line 9 - 9 of FIG. 7 .
- FIG. 10 is side elevational view of a housing and keeper according to another embodiment of the invention.
- FIG. 11 is a perspective view of a housing having a closed door secured by a conventional cam lock.
- spatially relative terms such as “under”, “below”, “lower”, “over”, “upper”, “lateral”, “left”, “right” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the descriptors of relative spatial relationships used herein interpreted accordingly.
- FIG. 1 illustrates a housing 10 having a top panel 12 with a first edge 14 , a bottom panel 16 having a support member 18 connected thereto or integrally formed therewith, and mounting brackets 20 for mounting housing 10 to a rack (not illustrated).
- Housing 10 further includes a door 22 having a hinge edge 24 connected to support member 18 by hinges 26 and a free edge 28 .
- Door 22 is configured to pivot about the axes of the hinges 26 between a first position with free edge 28 in contact with first edge 14 of top panel 12 and a second position with free edge 28 spaced from first edge 14 by, e.g., 90 degrees, 180 degrees or some other amount sufficient to allow access to the interior of the housing 10 .
- a second door 22 may be provided on an opposite side of the housing 10 .
- Door 22 includes a lock indicated generally by reference numeral 30 which lock comprises a keyway 32 for receiving a key (not illustrated), a cylinder 34 which is rotated by the rotation of the key in keyway 32 and a cam 36 having a first end 38 connected to cylinder 34 , a cam body 40 and a cam second end 42 .
- the rotation of the cylinder 34 cause the cam second end 42 to trace out an arc and shift between a first orientation, with the cam 36 extending, for example, generally parallel to door free edge 28 and a second position extending perpendicularly to the door free edge 28 .
- Cam second end 42 extends at an angle, such as 90 degrees, to the cam body 40 and lies in a plane generally parallel to the axis of rotation of the cylinder 34 .
- cam body 40 is generally perpendicular to the axis of rotation of cylinder 34 ; however, an alternate cam may be employed that includes a cam body extending at an angle other than 90 degrees to the axis of rotation of the cam. In such case, the cam second end will still lie in a plane parallel to the axis of rotation of the cylinder and will be angled accordingly relative to the cam body.
- a keeper 50 is formed near first edge 14 of top panel 12 and comprises an opening extending through the top panel 12 with a closed periphery and an interior side wall 52 .
- the keeper 50 includes a first portion 54 having a first width in a direction perpendicular to first edge 14 (indicated by arrow 56 ) and a second portion 58 having a second width greater than the first width of the first portion 54 .
- a user positions cam 36 so that cam body 40 does not extend beyond free edge 28 of door 22 and closes door 22 until door 22 contacts first edge 14 of top panel 12 .
- keyway 32 and cylinder 34 are rotated to move cam second end 42 toward keeper 50 .
- Cam second end 42 has a width in the direction 56 that is greater that the width of keeper first portion 54 and less than the width of keeper second portion 58 , and cam second end 58 thus passes freely through keeper second portion 58 as cylinder 34 rotates.
- cam second portion 42 rises above the plane of the top panel 12 , and cam body 40 enters the first portion 54 of keeper 50 which first portion 54 is sufficiently wide to accommodate the width of cam body 40 but, as mentioned above, is too narrow to allow cam second end 42 to pass therethrough.
- Cylinder 34 is locked in a position that holds cam body 40 in keeper first portion 54 with cam second end 42 above top panel 12 with a first section 60 of the cam second end 42 overlying a portion of the top panel 12 adjacent keeper 50 and a second section 62 of the cam second end 42 overlying the keeper second portion 58 .
- Cam body 40 fits in first portion 54 of keeper 50 with little clearance and engages side wall 52 of the keeper 50 if a user attempts to move door 22 away from top panel 12 while cam body 40 is in first portion 54 .
- angled cam second end 42 substantially prevents top panel 12 from being pried away from door 22 in a manner that would defeat a conventional cam without a bent second end 42 .
- lock 30 is used in a substantially similar manner as a conventional cam lock but provides the added advantage of making the housing tamper resistant.
- FIGS. 5-7 illustrate a housing 60 according to a second embodiment of the present invention in which elements common to the first embodiment are identified with like reference numerals.
- Housing 60 includes a keeper 62 comprising a member 64 depending from an inner side of top panel 12 , a first wall 66 connected to member 64 and extending parallel to the top panel 12 and a second wall 68 perpendicular to member 64 and to first wall 66 .
- Cam second end 42 pivots between first and second positions as described in connection with the first embodiment, but in the second position, cam second end 42 projects between first wall 66 and housing top panel 12 with cam body 40 on the side of second wall 68 opposite door 22 .
- the chain-dashed lines in FIG. 7 show cam 36 moving toward this locked orientation.
- cam body 40 engages second wall 68 when a user attempts to pivot door 22 away from housing top panel 12 , and cam second end 42 prevents the upward movement of keeper second wall 68 which helps prevent top panel 12 from being pried away from door 22 .
- keeper 60 is hidden when door 22 is closed which may be aesthetically preferable in some situations.
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Abstract
Description
- The present application claims the benefit of U.S. Provisional Patent Application No. 61/377,754 filed Aug. 27, 2010, the entire contents of which are hereby incorporated by reference.
- The present invention is directed to a fiber optic enclosure with a door securable in a closed position by a cam lock, and, more specifically, toward a fiber optic enclosure with a door securable in a closed position by a cam lock configured to substantially prevent a portion of the housing adjacent to the lock from being pried away from the cam lock.
- Optical fiber enclosures are known that contain various components for connecting optical fibers from a trunk cable to optical patch cables at a customer location. These enclosures or housings may be rack-mountable and may have front and/or rear hinged doors for providing access to the housing interior and the various fibers and components therein. One or both of these doors may be lockable using, for example, a cam lock.
- The locking portion of a
conventional housing 100 is illustrated inFIG. 8 which housing includes atop panel 102 and adoor 104 hingedly connected to a support (not illustrated) so that afree edge 106 of thedoor 104 can swing toward and away from thetop panel 102. Alock 108, which may comprise a conventional cam lock, includes a cylinder 110 that rotates when a key (not illustrated) is inserted inkeyway 112 and rotated, and acam 114 that rotates with the cylinder 110. In a locked position, illustrated with solid lines inFIG. 8 , the cam extends through aslot 116 in thetop panel 102 to prevent thedoor 104 from pivoting away from the top panel. Thecam 114 can be rotated out ofslot 116 to the orientation illustrated with chain-dashed lines inFIG. 8 to allow thedoor 104 to be opened. This conventional arrangement provides a reasonable degree of security for the components located insidehousing 100. However,slot 116 is generally located near a central portion of thetop panel 102. If thetop panel 102 is formed from a material that can be readily deformed, relatively thin sheet metal, for example, it may be possible to pry or bend the portion oftop panel 102 nearslot 116 away from cylinder 110 so thatcam 114 no longer extends throughslot 116. This allowsdoor 104 to be opened without using a key and without changing the orientation of cylinder 110. - The foregoing problem could be addressed by using various types of conventional locks having bolts or complicated latching mechanisms—a padlock and associated hasps could be mounted to the enclosure for increased security, for example. However, such approaches may substantially increase the cost and complexity of assembling and using such an optical fiber enclosure. It would therefore be desirable to provide a tamper-resistant optical fiber enclosure that operates in a manner similar to conventional lockable enclosures without the need for complicated and/or expensive modifications.
- These and other issues are addressed by embodiments of the present invention, a first aspect of which comprises a housing having a first panel lying in a first plane, which panel includes a keeper, a support member spaced from the first panel, and a door having a hinge edge hingedly connected to the support member and a free edge opposite the hinge edge, the door being shiftable between a first position generally perpendicular to the first panel and a second position. The door includes a lock comprising a rotatable cylinder having an axis of rotation perpendicular to the door and a cam having a first end connected to the cylinder for rotation with the cylinder and a second end spaced from the first end by a cam body. The second end extends at an angle to the cam body and lies in a second plane parallel to the axis of rotation. When the door is in the first position, the cam is shiftable from a first orientation with the cam second end spaced from the keeper and a second orientation with the cam second end overlying a side of the keeper opposite the cylinder to lock the door.
- Another aspect of the invention comprises a housing having a first panel lying in a first plane and including a keeper arrangement, a support member spaced from the first panel, and a door having a hinge edge hingedly connected to the support member and a free edge opposite the hinge edge. The door is shiftable between a first position with the free edge in contact with the first panel and a second position with the free edge spaced from the first panel. A lock is mounted on the door and includes a rotatable cylinder having an axis of rotation perpendicular to the door, the cylinder being shiftable between a first orientation and a second orientation angularly offset from the first orientation. The lock further includes a cam mechanism rotatable with the cylinder for engaging the keeper arrangement and limiting movement of the door free edge away from the first panel and for limiting movement of the first panel in a direction perpendicular to the plane when the cylinder is in the first position and the door is in the first position and for allowing movement of the door free edge away from the first panel when the cylinder is in the second position.
- A further aspect of the invention comprises a housing that includes a first panel lying in a first plane with an inner side facing into the housing and an outer side opposite the inner side. An opening with a side wall extends through the first panel and has a continuous periphery spaced from an edge of the panel. The opening includes a first portion having a first width in a direction perpendicular to the first edge and a second portion having a second width in the direction, the second width being greater than the first width. The housing also includes a second panel parallel to and spaced from the first panel and a door having a hinge edge hingedly connected to the second panel and a free edge opposite the hinge edge. The door is shiftable between a first position with the free edge in contact with the first panel and a second position with the free edge spaced from the first panel, and a lock is mounted on the door. The lock includes a key-actuated rotatable cylinder having an axis of rotation perpendicular to the door and a cam having a first end connected to the cylinder for rotation with the cylinder and a second end spaced from the first end by a cam body. The second end extends at an angle to the cam body and lies in a second plane parallel to the axis of rotation and has a length in the direction greater than the first width. When the door is in the first position, the cam is shiftable from a first orientation with the cam second end inside the housing to a second orientation with the cam second end overlying the first panel outer side, and the cam body engages the opening side wall to prevent the door from moving toward the second position when the cam is in the second orientation. The cam second end is spaced from the first panel when the cam body is located in the first portion.
- These and other aspects of the present invention will be better understood after a reading of the following detailed description together with the attached drawings wherein:
-
FIG. 1 is a perspective view of a housing having a keeper and a door having a cam lock according to an embodiment of the present invention. -
FIG. 2 is a perspective view of the door ofFIG. 1 in an open position with the cam lock in a first orientation. -
FIG. 3 is a perspective view of the door ofFIG. 1 in a closed position with the cam lock in the first orientation. -
FIG. 4 is a perspective view of the door ofFIG. 1 in a closed position with the cam lock in a second orientation. -
FIG. 5 is a perspective view of a housing having a keeper according to another embodiment of the invention. -
FIG. 6 is side elevational view of a housing and keeper according to another embodiment of the invention. -
FIG. 7 is side elevational view of a housing and keeper according to another embodiment of the invention. -
FIG. 8 is a sectional side elevational view taken in the direction of line 8-8 inFIG. 7 . -
FIG. 9 is sectional rear elevational view taken in the direction of line 9-9 ofFIG. 7 . -
FIG. 10 is side elevational view of a housing and keeper according to another embodiment of the invention. -
FIG. 11 is a perspective view of a housing having a closed door secured by a conventional cam lock. - The present invention now is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
- Like numbers refer to like elements throughout. In the figures, the thickness of certain lines, layers, components, elements or features may be exaggerated for clarity.
- The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Well-known functions or constructions may not be described in detail for brevity and/or clarity.
- As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. As used herein, phrases such as “between X and Y” and “between about X and Y” should be interpreted to include X and Y. As used herein, phrases such as “between about X and Y” mean “between about X and about Y.” As used herein, phrases such as “from about X to Y” mean “from about X to about Y.”
- It will be understood that when an element is referred to as being “on”, “attached” to, “connected” to, “coupled” with, “contacting”, etc., another element, it can be directly on, attached to, connected to, coupled with or contacting the other element or intervening elements may also be present. In contrast, when an element is referred to as being, for example, “directly on”, “directly attached” to, “directly connected” to, “directly coupled” with or “directly contacting” another element, there are no intervening elements present. It will also be appreciated by those of skill in the art that references to a structure or feature that is disposed “adjacent” another feature may have portions that overlap or underlie the adjacent feature.
- Spatially relative terms, such as “under”, “below”, “lower”, “over”, “upper”, “lateral”, “left”, “right” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the descriptors of relative spatial relationships used herein interpreted accordingly.
-
FIG. 1 illustrates ahousing 10 having atop panel 12 with afirst edge 14, abottom panel 16 having asupport member 18 connected thereto or integrally formed therewith, and mountingbrackets 20 for mountinghousing 10 to a rack (not illustrated).Housing 10 further includes adoor 22 having ahinge edge 24 connected to supportmember 18 byhinges 26 and afree edge 28.Door 22 is configured to pivot about the axes of thehinges 26 between a first position withfree edge 28 in contact withfirst edge 14 oftop panel 12 and a second position withfree edge 28 spaced fromfirst edge 14 by, e.g., 90 degrees, 180 degrees or some other amount sufficient to allow access to the interior of thehousing 10. Asecond door 22 may be provided on an opposite side of thehousing 10. -
Door 22 includes a lock indicated generally byreference numeral 30 which lock comprises akeyway 32 for receiving a key (not illustrated), acylinder 34 which is rotated by the rotation of the key inkeyway 32 and acam 36 having afirst end 38 connected tocylinder 34, acam body 40 and a camsecond end 42. Connected in this manner, the rotation of thecylinder 34 cause the camsecond end 42 to trace out an arc and shift between a first orientation, with thecam 36 extending, for example, generally parallel to doorfree edge 28 and a second position extending perpendicularly to the doorfree edge 28. Camsecond end 42 extends at an angle, such as 90 degrees, to thecam body 40 and lies in a plane generally parallel to the axis of rotation of thecylinder 34. In the present embodiment,cam body 40 is generally perpendicular to the axis of rotation ofcylinder 34; however, an alternate cam may be employed that includes a cam body extending at an angle other than 90 degrees to the axis of rotation of the cam. In such case, the cam second end will still lie in a plane parallel to the axis of rotation of the cylinder and will be angled accordingly relative to the cam body. - A
keeper 50 is formed nearfirst edge 14 oftop panel 12 and comprises an opening extending through thetop panel 12 with a closed periphery and aninterior side wall 52. Thekeeper 50 includes afirst portion 54 having a first width in a direction perpendicular to first edge 14 (indicated by arrow 56) and asecond portion 58 having a second width greater than the first width of thefirst portion 54. - In use, a user positions
cam 36 so thatcam body 40 does not extend beyondfree edge 28 ofdoor 22 and closesdoor 22 untildoor 22 contacts first edge 14 oftop panel 12. Using a key, not illustrated,keyway 32 andcylinder 34 are rotated to move camsecond end 42 towardkeeper 50. Camsecond end 42 has a width in thedirection 56 that is greater that the width of keeperfirst portion 54 and less than the width of keepersecond portion 58, and camsecond end 58 thus passes freely through keepersecond portion 58 ascylinder 34 rotates. With continued rotation, camsecond portion 42 rises above the plane of thetop panel 12, andcam body 40 enters thefirst portion 54 ofkeeper 50 whichfirst portion 54 is sufficiently wide to accommodate the width ofcam body 40 but, as mentioned above, is too narrow to allow camsecond end 42 to pass therethrough.Cylinder 34 is locked in a position that holdscam body 40 in keeperfirst portion 54 with camsecond end 42 abovetop panel 12 with afirst section 60 of the camsecond end 42 overlying a portion of thetop panel 12adjacent keeper 50 and asecond section 62 of the camsecond end 42 overlying the keepersecond portion 58. -
Cam body 40 fits infirst portion 54 ofkeeper 50 with little clearance and engagesside wall 52 of thekeeper 50 if a user attempts to movedoor 22 away fromtop panel 12 whilecam body 40 is infirst portion 54. At the same time, angled camsecond end 42 substantially preventstop panel 12 from being pried away fromdoor 22 in a manner that would defeat a conventional cam without a bentsecond end 42. Thus, lock 30 is used in a substantially similar manner as a conventional cam lock but provides the added advantage of making the housing tamper resistant. -
FIGS. 5-7 illustrate ahousing 60 according to a second embodiment of the present invention in which elements common to the first embodiment are identified with like reference numerals.Housing 60 includes akeeper 62 comprising amember 64 depending from an inner side oftop panel 12, afirst wall 66 connected tomember 64 and extending parallel to thetop panel 12 and asecond wall 68 perpendicular tomember 64 and tofirst wall 66. Camsecond end 42 pivots between first and second positions as described in connection with the first embodiment, but in the second position, cam second end 42 projects betweenfirst wall 66 andhousing top panel 12 withcam body 40 on the side ofsecond wall 68 oppositedoor 22. The chain-dashed lines inFIG. 7 show cam 36 moving toward this locked orientation. Withcam 36 projecting directly towardhousing top panel 12,cam body 40 engagessecond wall 68 when a user attempts to pivotdoor 22 away from housingtop panel 12, and camsecond end 42 prevents the upward movement of keepersecond wall 68 which helps preventtop panel 12 from being pried away fromdoor 22. In this embodiment,keeper 60 is hidden whendoor 22 is closed which may be aesthetically preferable in some situations. - The present invention has been described above in terms of presently preferred embodiments. Obvious changes and additions to these embodiments will become apparent to those of ordinary skill in the art upon a reading of the foregoing disclosure. It is intended that all such changes and additions comprise a part of the present invention to the extent they fall within the scope of the several claims appended hereto.
Claims (20)
Priority Applications (1)
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US13/213,669 US8820860B2 (en) | 2010-08-27 | 2011-08-19 | Fiber optic enclosure having tamper resistant lock |
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US37775410P | 2010-08-27 | 2010-08-27 | |
US13/213,669 US8820860B2 (en) | 2010-08-27 | 2011-08-19 | Fiber optic enclosure having tamper resistant lock |
Publications (2)
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US20120049711A1 true US20120049711A1 (en) | 2012-03-01 |
US8820860B2 US8820860B2 (en) | 2014-09-02 |
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US13/213,669 Active 2032-05-21 US8820860B2 (en) | 2010-08-27 | 2011-08-19 | Fiber optic enclosure having tamper resistant lock |
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WO (1) | WO2012027225A2 (en) |
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EP4134718A1 (en) * | 2021-08-12 | 2023-02-15 | Langmatz GmbH | Self-supporting body for an outdoor distribution box and outdoor distribution box with such a body |
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US20140252779A1 (en) * | 2013-03-11 | 2014-09-11 | Nokia Corporation | Locking Arrangement |
US10416406B1 (en) | 2018-03-01 | 2019-09-17 | Afl Telecommunications Llc | Communications module housing |
US10451828B1 (en) | 2018-11-09 | 2019-10-22 | Afl Telecommunications Llc | Communications module housing |
US10736438B1 (en) * | 2020-02-12 | 2020-08-11 | VIRA Insight, LLC. | Display shelf lock box |
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Also Published As
Publication number | Publication date |
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US8820860B2 (en) | 2014-09-02 |
WO2012027225A2 (en) | 2012-03-01 |
WO2012027225A3 (en) | 2012-04-19 |
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